Παραπομπή APA

India. Ministry of energy. Department of coal. (1981). Committee on public undertakings (1981-82): Thirtieth report. Lok Sabha.

Παραπομπή Chicago Style

India. Ministry of energy. Department of coal. Committee on Public Undertakings (1981-82): Thirtieth Report. New Delhi: Lok Sabha, 1981.

Παραπομπή MLA

India. Ministry of energy. Department of coal. Committee on Public Undertakings (1981-82): Thirtieth Report. Lok Sabha, 1981.